Step 1: Attatching the hose clamp.

Step 2: Testing and Troubleshoot

Test your dynamo conect the motor wires something you want to power. Then start riding. See below for more details. This is my first instructable...

'A simple bike dynamo using a motor as a generator.

WARNING becareful not to get any of the parts from this project caught up in your bike. This dynamo can put out more than 12 volts becareful with your parts or they could get blown.

Materials:
1 motor 4v (higher voltage is better)
strong plastic lid
hose clamp looks like a metal circle which can be loosend and tightend. choose one to the size of your motor and the size of the bar on your bike.
something electronic like a bulb or buzzer you can test your dynamo on.

Step 1: Attatching the hose clamp.

Attatch the hose clamp around the bar of your bike put your motor in so it is touching either the tyre or rim. Make sure it stays firmly. If not try wedging something imbetween the motor and bar. See below for more details.

Step 2: Testing and Troubleshoot

Test your dynamo conect the motor wires something you want to power. Then start riding. See below for more details.

This is my first instructable. Sorry about not having real pictures but that is what it looks like except for the crappy bike drawing.

Very good. I can see how it might be a problem to fine-tune one of these, though. I was going to make one of these, but I couldn't figure out how to attach it. Did you get your idea from Tetranitrate's Lego motor generators too?

Hi Thanks for replying. The hose clamps work quite well but yes they don't keep the motor attatched firmly, i think you can use radiator clips or something like that you'll probably be able to work out a good method. Tetranite's Lego generators gave me some help but only with the comments other people added really, like adding some rechargable batteries so the light won't run out when you stop.

Yeah, I basically meant the comments too. you have a very good idea clamping it there with something, i was trying to figure out how to attach it but i had no idea how to. this gave me some very good ideas. Again, great instructable.

the higher rating a generator has, the more voltage you'll get out of it, but you'll probably never get 3v out of a 3v generator, unless you can rotate the axle as fast as 3v of power can turn the axle. i hooked up a 3v generator from a hand-held fan to my bike, and could only get about 1v power even at top speed. if you want the axle to turn faster, you'll need a series of gears.

Do you mean to trickle charge your battery off the Dynamo or Full on run it off the generator? If A) you want to trickle charge the battery, it will charge verrry slowly so don't expect a huge increase in ride time. Or B) If you are try to run the scooter off of it with no battery, it isn't going to work. The Dynamo would have to be at lease 100% efficient, which is impossible to at this time.

your right 100% is impossible that way by definition due to resistance i.e. friction, but electric heaters are 100% efficient by deffinition because their only purpose is to ecounter resistance cool huh

well, I don't think a little motor from a cad drive is going to do much, they are not designed for the current... You could try using a motor out of an old arc car (motor, NOT SERVO) you could also try gluing the plastic cap to the motor to ensure that it is not slipping. try using a smaller lightblub instead of a bigger motor. and my final piece of advice would be to try it riding faster

Go to your nearest Lowes or Home Depot and get a spring loaded mini hinge. Attach the motor to the hinge and the hinge to the frame. The spring loading will keep it against the tire. I used to have a headlight system on my bike when I rode as a kid and it worked exactly like this.